Fire-walling and packets accounting

Introduction

1. Tasks

2. Packet filtering

3. Bidirectional rules

4. Blocking rules

5. Forwarding rules

6. Activating rules globally or selectively

7. When everything goes wrong

8. The logic of firewalling with linuxconf

• 8.1 Positive logic
• 8.2 A pre-cooked firewall solution

9. State of the fire-walling support in Linuxconf